The study was conducted in the
KwaZulu-Natal region of South Africa. During 3 months of fieldwork the
flower visitors and pollinators to an assemblage of nine asclepiads at
an upland grassland site were studied. Two of the specialized
pollination systems that were documented are new to the asclepiads:
fruit chafer pollination and pompilid wasp pollination (the latter is
almost unique in the angiosperms).

Data type

The authors recorded their data by
counting the number of individual flower visitors observed and/or
caught on each plant species. The total number of individuals observed
on each plant species provide a rough estimate of the level of
visitation that each species received. Data are presented as an
interaction frequency matrix, in which cells with positive integers
indicate the frequency of interaction between a pair of species, and
cells with zeros indicate no interaction.